Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Significant Accounting Policies [Abstract]

Schedule Of Depreciation And Amortization Rates

	06/01/08	-	10/31/10	11/01/10	-	12/31/12
Steam production plant	4.45%	-	5.85%	4.81%	-	7.04%
Hydraulic production plant	1.22%	-	3.00%	1.06%	-	3.00%
Other production plant	3.77%	-	10.56%	3.98%	-	10.15%
Transmission plant	1.61%	-	6.67%	1.58%	-	7.86%
Distribution plant	1.95%	-	9.77%	2.17%	-	9.63%
General plant	1.25%	-	26.11%	1.57%	-	20.00%
Other	2.75%	-	2.75%	2.75%	-	2.75%